The freebie items are called "Premiums"!
Wow Mart. We rarely bought name brand items. But we did get jelly in mugs.
I remember hand towels, dish cloths and wash cloths in the clothes detergent.
S&H Green Stamps and True Value Stamps.
You can still get glasses with jelly but not the coolest ones like way back! Even Kraft still sells cheese in the "juice size" glasses.
My mom gave these to me awhile back and says they were premiums when she was young:
and
(Note: these are not actual pics of my items which are boxed up due to having wooden floors installed (they are in and will be hand scraped/stained in 2 weeks! Borrowed from the wonderful internet!)